Omnicom Group (OMC) - Market capitalization

Market cap: £17.49 Billion

As of December 2025 Omnicom Group has a market cap of £17.49 Billion. This makes Omnicom Group the world's 983th most valuable company by market cap according to our data. The market capitalization, commonly called market cap, is the total market value of a publicly traded company's outstanding shares and is commonly used to measure how much a company is worth.

Market cap history of Omnicom Group from 1996 to 2025

End of year Market Cap

Year	Marketcap	Change
2025	£17.49 B	29.23%
2024	£13.53 B	0.72%
2023	£13.44 B	-2.24%
2022	£13.74 B	19.16%
2021	£11.53 B	17.3%
2020	£9.83 B	-26.67%
2019	£13.41 B	3.83%
2018	£12.91 B	3.99%
2017	£12.42 B	-23.65%
2016	£16.27 B	32.95%
2015	£12.23 B	-0.31%
2014	£12.27 B	5.69%
2013	£11.61 B	43.41%
2012	£8.09 B	2.35%
2011	£7.91 B	-6.59%
2010	£8.47 B	13.53%
2009	£7.46 B	30.7%
2008	£5.70 B	-25.57%
2007	£7.67 B	-14.61%
2006	£8.98 B	2.05%
2005	£8.80 B	7.12%
2004	£8.21 B	-11.62%
2003	£9.29 B	22.69%
2002	£7.57 B	-35.5%
2001	£11.74 B	14.93%
2000	£10.22 B	-6.95%
1999	£10.98 B	86.79%
1998	£5.88 B	40.62%
1997	£4.18 B	94.6%
1996	£2.14 B

End of Day market cap according to different sources

On Dec 5th, 2025 the market cap of Omnicom Group was reported to be:

£10.63 Billion

by Nasdaq

£17.49 Billion

by CompaniesMarketCap

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
Interpublic Group IPG	£6.75 B	-61.39%	🇺🇸 USA
MDC Partners MDCA	£0.31 B	-98.17%	🇺🇸 USA
Clear Channel Outdoor CCO	£0.74 B	-95.75%	🇺🇸 USA
Lamar Advertising LAMR	£10.10 B	-42.26%	🇺🇸 USA
Alliance Data ADS	£2.12 B	-87.83%	🇺🇸 USA
eBay EBAY	£28.29 B	61.72%	🇺🇸 USA

What is the market capitalization of a company?

The market capitalization sometimes referred as Marketcap, is the value of a publicly listed company.
In most cases it can be easily calculated by multiplying the share price with the amount of outstanding shares.

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Market capitalization of Omnicom Group (OMC)

Market cap: £17.49 Billion